Home / 3,916.89-5,405.28-2,148.51

Finding the Fourth Proportional to 3,916.89, 5,405.28 and 2,148.51

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Solution

The fourth proportional to 3,916.89, 5,405.28 and 2,148.51 is: 2,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.89 : 5,405.28 = 2,148.51 : x
  2. Step 2: Convert to fraction form
    3,916.89/5,405.28 = 2,148.51/x
  3. Step 3: Cross multiply
    3,916.89x = 5,405.28 × 2,148.51
  4. Step 4: Simplify right side
    3,916.89x = 11,613,298.13
  5. Step 5: Solve for x
    x = 11,613,298.13/3,916.89
  6. Step 6: Final answer
    x = 2,964.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.